A291859 Prime numbers of the form 7^k - 12.

37, 331, 2389, 13841287189, 65712362363534280139531, 459986536544739960976789, 54116956037952111668959660837, 2651730845859653471779023381589

Offset: 1

Author

Robert Price, Sep 04 2017

Keywords

• nonn

Links

• Robert Price, Table of n, a(n) for n = 1..10
• F. Firoozbakht and M. F. Hasler, Variations on Euclid's formula for Perfect Numbers, JIS 13 (2010) #10.3.1.
• Henri & Renaud Lifchitz, PRP Records
• OpenPFGW Project, Primality Tester

Crossrefs

Cf. A236371.

Programs

Mathematica

Select[Table[7^k - 12, {k, 2, 100}], PrimeQ[#] &]